Any idea how to reduce or change fields displayed in preview pane please?
I looked all over Studio, but can't see where this is done.
Tony Romano This functionality is now available as mentioned in the Q2 2020 and 10.0 release announcements. I hope this helps!
General Administration FeaturesEditing preview layoutsAdministrators can now edit the Preview View layout in Studio.
General Administration Features
By default the preview view will show the same fields you added to the recordview Layout in Admin > Studio. So there is no extra Layout editor for the preview view. Adding a field to the recordview will also show in the preview.
What do you try to achieve, you want the preview to be different than the recordview?
yes that would be very useful to have the option arrange that view.
If you can imagine the use case, a user viewing the list view of all customers they need to call that day, they could very easily view and update directly from the side panel preview and therefore saving lots of time.
However, the UX won't be as good when there are lots of fields to scroll down to get what they need.
Definitely, I think this would be a great addition in Ideas
Other than that you could also hide fields with custom code, check out the following post that did something similar:
How to hide a field in preview?
Excellent news Alex, took a while but got there
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